Remove iMessages remotely?

So, at my job we had Macs and I had my Apple ID connected to my work computer. I quit unexpectedly and didn’t get the chance to remove my ID from the computer. My messages, of course, are still going to be on the computer. I don’t want my old boss being able to view my messages/send messages from it (yes, I believe she WOULD do something like this). I removed the device from my Apple ID list, and changed my password.

Will this remove messages from that computer, or will she be able to see my last messages? Is there any other way I could remove them remotely? Going back into the office is not an option at this point.